Small portable efficient medicament mixing and spraying device

Abstract

The invention relates to the technical field of medicament spraying, and discloses a small portable efficient medicament mixing and spraying device which comprises a suction assembly, a spraying pipe is mounted at the output end of the suction assembly, the suction assembly comprises a hydraulic cylinder, a filtering assembly is fixedly mounted at the lower end of the hydraulic cylinder, and a connecting column is fixedly mounted at the driving end of the hydraulic cylinder; the lower end of the connecting column penetrates through the filtering assembly, a piston plate is rotatably installed at the lower end of the connecting column, the filtering assembly comprises a connecting shell, a filtering barrel is fixedly installed at the lower end of the connecting shell, when the piston plate moves downwards along with the hydraulic cylinder, sewage in the filtering barrel is pushed to be sprayed out from a second drainage hole, and when the piston plate moves upwards along with the hydraulic cylinder, negative pressure is formed in the filtering assembly; sewage is reversely sucked into the filtering barrel through the first drainage hole and the second drainage hole, the pulse type water pressure change enables a medicament spraying path to be in a far-near-far wave-shaped track, the coverage area is enlarged by 40% compared with that of traditional linear spraying, and the medicament gathering problem of a single falling point is avoided.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical spraying technology, and in particular to a small, portable, high-efficiency pharmaceutical mixing and spraying device. Background Technology

[0002] With the advancement of the rural revitalization strategy and the green transformation of industry, the scale of small-scale sewage treatment scenarios (such as rural sewage treatment plants, catering oil-water separators, and laboratory wastewater treatment) is growing rapidly. It is estimated that by 2025, the domestic demand for such equipment will account for 35%. Traditional equipment, due to its "bulky and inefficient nature, rough operation, and frequent maintenance," can no longer meet the actual needs of rapid on-site treatment and low-cost operation and maintenance. Therefore, developing a small device that integrates portability, high-efficiency mixing, precise spraying, corrosion resistance, and durability has become the key to solving the current "last mile" problem of sewage treatment.

[0003] For example, Chinese Patent CN215249625U discloses a water treatment agent mixer. The jet mixing section includes a first perforated plate with multiple material distribution holes; a jet tube, one end of which is located outside one end of the jet mixing section, and the other end of which has multiple jet holes that extend through the first perforated plate into the jet mixing section; a cavity feed pipe located between one end of the jet mixing section and the first perforated plate; and a spiral mixing section connected to the other end of the jet mixing section. In this invention, water treatment agents are transported to the jet mixing section through the jet tube and its jet holes. Raw water or wastewater is then transported to the jet mixing section through the cavity feed pipe and material distribution holes to collide and mix with the water treatment agents. Further, the spiral mixing section's spiral stirring action achieves rapid and uniform mixing of the water treatment agents and raw water or wastewater within the water treatment agent mixer.

[0004] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: 1. Water is drawn in by a water pump and sprayed through a water pipe. At the same time, a chemical addition pipe is connected to the outside of the water pipe. Because the water pump continuously outputs water, the chemical is easily sprayed out in the form of a water column, which accumulates in the spraying area and cannot be evenly dispersed. This results in excessively high chemical concentrations in some areas and insufficient chemical concentrations in other areas, which affects the sewage treatment effect, increases the cost of chemical use, and may interfere with subsequent treatment processes. 2. At the connection between the water pipe and the chemical addition pipe, the water flow rate at the connection is too fast due to the pump suction, making it difficult for the chemical and water to mix fully and form a uniform mixture. As a result, the mixed liquid cannot effectively exert the chemical effect after spraying, reducing the sewage treatment efficiency. It may also cause local corrosion of the equipment pipeline by high concentrations of chemical, shortening the service life of the equipment. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing technology has the disadvantage that the agent is easily sprayed out in the form of a water column due to the continuous output of water pump, and it accumulates in a certain area and cannot be evenly dispersed, resulting in excessively high local agent concentration and insufficient agent in other areas. To this end, we propose a small portable agent high-efficiency mixing and spraying device.

[0006] To achieve the above objectives, this application adopts the following technical solution: a small, portable, high-efficiency chemical mixing and spraying device, including a suction component, a spray pipe installed at the output end of the suction component, and the spray pipe connected to the railing of a sewage tank via a connecting rod. When it is necessary to spray the sewage tank with chemicals, the lower end of the suction component is submerged in the sewage tank, the spray pipe is fixed to the sewage tank, the suction component is activated to filter the sewage in the sewage tank and allow it to flow into the spray pipe to mix with the chemicals, and then discharge it from the outlet of the spray pipe, thereby achieving chemical spraying treatment of the sewage tank. At the same time, the mixing of sewage and chemicals greatly improves the resource utilization rate.

[0007] Preferably, the suction assembly includes a hydraulic cylinder, a filter assembly is fixedly installed at the lower end of the hydraulic cylinder, a connecting column is fixedly installed at the drive end of the hydraulic cylinder, the connecting column passes through the filter assembly and is slidably connected to it, a piston plate is rotatably installed at the lower end of the connecting column, two sets of one-way valves are provided inside the piston plate, the piston plate is slidably connected to the filter assembly, by immersing the filter assembly in the sewage tank, the hydraulic cylinder drives the piston plate to move up and down reciprocally, the sewage is filtered by the filter assembly and then pushed into the spray pipe to mix with the agent and spray out.

[0008] Preferably, the filter assembly includes a connecting shell, a filter barrel is fixedly installed at the lower end of the connecting shell, a flow shell is installed through the outer side of the connecting shell, and the flow shell is fixedly connected to the spray pipe.

[0009] Preferably, the filter barrel consists of two layers. The upper filter barrel has a drainage hole one, and the lower filter barrel has a drainage hole two. The diameter of drainage hole two is twice that of drainage hole one. After the filter assembly is submerged in the sewage tank, a hydraulic cylinder drives a piston plate to move up and down reciprocally. Initially, since the filter barrel is completely submerged in the sewage tank, sewage fills its interior through the pores of the filter barrel. When the hydraulic cylinder drives the piston plate downward, the piston plate pushes the sewage inside the connecting shell and the sewage inside the filter barrel, pushing the sewage out of the filter barrel and clearing the blockages of drainage holes one and two on the filter barrel. At the same time, the sewage inside the filter barrel is discharged outward, blowing away impurities near the filter barrel. Simultaneously, sewage near the filter barrel is replenished into the filter barrel through the pores. When the piston plate moves upward, it pushes the sewage inside the connecting shell and the sewage inside the upper filter barrel. Wastewater flows through the flow shell into the spray pipe and mixes with the chemicals before being discharged. As the piston plate rises, it gradually enters the connecting shell. Inside the connecting shell, the wastewater is gradually squeezed out, reducing the amount of wastewater pushed into the spray pipe and lowering the water pressure. This causes the water column from the spray pipe to shorten, resulting in a straight spray path and improved uniformity of the chemicals in the wastewater tank. Because the piston plate can descend to a position between the lower filter barrels, large particles will not enter the connecting shell through drain hole two and cause blockage. During the piston plate's descent, wastewater is first discharged through the larger-diameter drain hole two. As drain hole two rises, due to the smaller diameter of drain hole one, some wastewater is squeezed out, while the remaining wastewater, along with the wastewater inside the connecting shell, flows through the flow shell into the spray pipe and mixes with the chemicals before being sprayed.

[0010] Preferably, a rubber scraper roller is fixedly installed on the outer side of the piston plate, and a limiting ball is fixedly installed on the outer side of the piston plate, the limiting ball matching the connecting shell and the upper filter barrel.

[0011] Preferably, the inner wall of the connecting shell is provided with an arc-shaped groove 1, and the inner wall of the upper filter barrel is provided with an arc-shaped groove 2. The arc-shaped groove 2 is connected to the arc-shaped groove 1. The limiting ball matches the arc-shaped groove 2 and the arc-shaped groove 1. While the piston plate moves downward, the piston plate on the outside of the piston plate slides inside the arc-shaped groove 2 and the arc-shaped groove 1, driving the rubber scraper roller on the outside of the piston plate to remove impurities and prevent clogging on the inner wall of the upper filter barrel.

[0012] Preferably, the flow shell is fixedly connected to the spray pipe by bolts. The spray pipe is divided into a liquid delivery pipe, a bend, and an output pipe. The bend has two sets of limiting plates inside, and a fixed shaft is rotatably installed between the two sets of limiting plates. Torsion springs are installed at both ends of the fixed shaft, and one end of the torsion spring is fixedly connected to the inner wall of the bend. The inner wall of the bend has two sets of limiting blocks, which are located on the side of the limiting plates closest to the limiting plates. When the piston plate delivers sewage to the spray pipe, the sewage passes through the liquid delivery pipe, the bend, and the output pipe under pressure. When the sewage passes through the bend, it breaks through the two sets of limiting plates and flows into the output pipe. The limiting plates prevent sewage backflow under the restriction of the limiting blocks. Since the piston plate is equipped with two sets of one-way valves, when the piston plate moves downward, the piston plate first discharges the sewage inside the filter tank into the upper end of the piston plate. At the same time, the limiting plates inside the bend prevent the liquid inside the spray pipe from backflowing due to the pressure of the piston plate moving downward, thus affecting the spraying effect.

[0013] Preferably, a Venturi tube is fixedly installed on the inner wall of the output tube, and the Venturi tube and the inner wall of the output tube form a liquid storage cavity. An infusion tube is installed through the upper end of the output tube, and the infusion tube is connected to the liquid storage cavity. The infusion tube is connected to the medicine storage tank, and the medicine is slowly introduced into the infusion tube through the output pump.

[0014] Preferably, the throat of the venturi tube has multiple sets of circular holes, and the diffuser section of the venturi tube is equipped with three sets of spiral guide vanes. When the sewage passes through the outlet pipe, due to the high flow velocity of the sewage, the sewage flows from the constriction section of the venturi tube to the throat section for acceleration, thereby attracting the liquid inside the storage chamber to mix with the sewage through the circular holes and then discharge through the diffuser section of the venturi tube. During discharge, due to the spiral guide vanes inside the diffuser section, the mixed liquid is transformed from axial flow to swirling flow, which enhances the turbulent mixing of the agent and the sewage.

[0015] The technical effects and advantages of this invention are as follows: In this invention, the upper filter barrel has a 2mm diameter drainage hole one, and the lower filter barrel has a 4mm diameter drainage hole two, forming a "coarse-to-fine" graded filtration system. When the piston plate moves downward with the hydraulic cylinder, its bottom fits against the inner wall of the lower filter barrel, forming a volume compression chamber. This propels the wastewater in the filter barrel to be ejected from the drainage hole two at a flow rate of 3-5m / s. The high-speed water flow not only disperses the fibrous impurities attached to the hole wall, but also breaks up the scum layer within a 30cm radius around the filter barrel into particles with a diameter ≤2mm, preventing large particles from clogging subsequent pipelines. At this time, the drainage hole one of the upper filter barrel, due to its smaller diameter, only allows wastewater to pass through while trapping fine particles. The filter assembly achieves initial purification. As the piston plate moves upward with the hydraulic cylinder, a negative pressure is created inside the filter assembly. Wastewater is drawn into the filter bucket through drain holes one and two in reverse. At the same time, the one-way valve on the piston plate opens, pushing the wastewater in the connecting shell to the flow shell. During this process, the water pressure in the spray pipe decreases in a stepwise manner: in the initial stage, the water pressure is maintained at 0.2MPa, and the spraying distance reaches 5-6 meters; in the final stage, the water pressure drops to 0.1MPa, and the spraying distance is shortened to 2-3 meters. This pulsed water pressure change makes the spray path of the agent present a "far-near-far" wave-shaped trajectory, which increases the coverage area by 40% compared with traditional straight-line spraying and avoids the problem of agent accumulation at a single landing point. Attached Figure Description

[0016] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall structure of the device of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the device of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the overall structure of the suction assembly of the present invention; Figure 4 This is a schematic diagram of the internal structure of the filter assembly of the present invention; Figure 5 This is an enlarged view of Figure A of the present invention; Figure 6 This is a schematic diagram of the piston plate structure of the present invention; Figure 7 This is a schematic diagram of the overall structure of the spray pipe of the present invention; Figure 8 This is a schematic diagram of the internal structure of the bend in the present invention; Figure 9 This is a schematic diagram of the internal structure of the output tube of the present invention; Figure 10 This is a schematic diagram of the internal structure of the venturi tube of the present invention.

[0017] Legend: 1. Suction assembly; 11. Hydraulic cylinder; 111. Connecting column; 112. Piston plate; 1121. Rubber scraper roller; 1122. Limiting ball; 1123. Check valve; 12. Filter assembly; 121. Connecting shell; 1211. Arc groove one; 122. Flow shell; 123. Filter barrel; 1231. Drain hole one; 1232. Drain hole two; 1233. Arc groove two; 2. Spray pipe; 21. Bolt; 22. Liquid delivery pipe; 23. Bend; 231. Limiting plate; 232. Limiting block; 233. Fixed shaft; 24. Output pipe; 241. Venturi tube; 2411. Spiral guide vane; 2412. Round hole; 242. Liquid storage chamber; 25. Infusion pipe; 3. Connecting rod. Detailed Implementation

[0018] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0019] Reference Figure 1-2 As shown, the present invention provides a technical solution: a small, portable, high-efficiency chemical mixing and spraying device, including a suction component 1, a spray pipe 2 installed at the output end of the suction component 1, and the spray pipe 2 connected to the railing of a sewage tank via a connecting rod 3. When it is necessary to spray the sewage tank with chemicals, the lower end of the suction component 1 is submerged in the sewage tank, the spray pipe 2 is fixed to the sewage tank, the suction component 1 is activated to filter the sewage in the sewage tank and allow it to flow into the spray pipe 2 to mix with the chemicals, and then discharge it from the outlet of the spray pipe 2, thereby achieving chemical spraying treatment of the sewage tank. At the same time, the mixing of sewage and chemicals greatly improves the resource utilization rate.

[0020] Reference Figure 1-4 , Figure 6 As shown in this embodiment: the suction component 1 includes a hydraulic cylinder 11, a filter component 12 is fixedly installed at the lower end of the hydraulic cylinder 11, a connecting column 111 is fixedly installed at the drive end of the hydraulic cylinder 11, the connecting column 111 passes through the filter component 12 and is slidably connected to it, a piston plate 112 is rotatably installed at the lower end of the connecting column 111, two sets of one-way valves 1123 are provided inside the piston plate 112, the piston plate 112 is slidably connected to the filter component 12, by immersing the filter component 12 in the sewage tank, the hydraulic cylinder 11 drives the piston plate 112 to move up and down reciprocally, the sewage is filtered by the filter component 12 and then pushed into the spray pipe 2 to mix with the agent and spray out.

[0021] Reference Figure 3-4As shown in this embodiment: the filter assembly 12 includes a connecting shell 121, a filter barrel 123 is fixedly installed at the lower end of the connecting shell 121, and a flow shell 122 is installed through the outer side of the connecting shell 121. The flow shell 122 is fixedly connected to the spray pipe 2.

[0022] Reference Figure 1-4 , Figure 6 As shown in this embodiment, the filter bucket 123 is divided into two layers. The upper filter bucket has a drainage hole 1231 with a diameter of 2mm, and the lower filter bucket has a drainage hole 1232 with a diameter of 4mm. The diameter of the drainage hole 1232 is twice that of the drainage hole 1231. After the filter assembly 12 is submerged in the sewage tank, the piston plate 112 is driven by the hydraulic cylinder 11 to move up and down reciprocally. In the initial state, since the filter bucket 123 is completely submerged in the sewage tank, sewage fills its interior through the pores of the filter bucket 123. When the hydraulic cylinder 11 drives the piston plate 112 to move downward, the piston plate 112 will push the sewage inside the connecting shell 121 and the filter bucket 12. 3. The wastewater inside the filter tank 123 is pushed out, clearing the blockages in the drain holes 1231 and 1232. Simultaneously, the wastewater inside the filter tank 123 is discharged outwards, blowing away impurities near the filter tank 123. Wastewater near the filter tank 123 is also replenished into the filter tank 123 through its pores. When the piston plate 112 moves upwards, it pushes the wastewater inside the connecting shell 121 and some of the wastewater inside the upper filter tank 123 through the flow shell 122 into the spray pipe 2, where it mixes with the chemicals and is discharged. The piston plate 112 moves upwards... During the lifting process, the wastewater gradually enters the connecting shell 121 from the piston plate 112. After entering the connecting shell 121, the wastewater inside is gradually squeezed out, reducing the amount of wastewater pushed into the spray pipe 2 and lowering the water pressure. This causes the water column sprayed from the spray pipe 2 to gradually shorten. Initially, the water pressure is maintained at 0.2 MPa, and the spraying distance reaches 5-6 meters; in the final stage, the water pressure drops to 0.1 MPa, and the spraying distance shortens to 2-3 meters. This pulsed water pressure change causes the pesticide spraying path to present a "far-near-far" wave-shaped trajectory, increasing the coverage area by 40% compared to traditional straight-line spraying. This avoids the problem of pesticide accumulation at a single landing point and improves efficiency. This ensures the uniformity of the chemical mixing in the sewage tank. Simultaneously, because the piston plate 112 can descend to a position between the lower filter barrel 123 and the lower filter barrel 123, large particles of impurities will not enter the connecting shell 121 through the drain hole 1232 and cause blockage. During the descent of the piston plate 112, sewage is first discharged from the large-diameter drain hole 1232. As the drain hole 1232 rises, due to the smaller diameter of the drain hole 1231, some sewage is squeezed out of the drain hole 1231, while the remaining sewage, along with the sewage inside the connecting shell 121, flows through the flow shell 122 into the spray pipe 2 to mix and spray with the chemical.

[0023] Reference Figure 5-6 As shown in this embodiment: a rubber scraper roller 1121 is fixedly installed on the outer side of the piston plate 112, and a limiting ball 1122 is fixedly installed on the outer side of the piston plate 112. The limiting ball 1122 matches the connecting shell 121 and the upper filter barrel 123.

[0024] Reference Figure 4-5 As shown in this embodiment: the inner wall of the connecting shell 121 is provided with an arc-shaped groove 1211, and the inner wall of the upper filter barrel 123 is provided with an arc-shaped groove 1233. The arc-shaped groove 1233 is connected to the arc-shaped groove 1211. The limiting ball 1122 matches the arc-shaped groove 1233 and the arc-shaped groove 1211. When the piston plate 112 moves downward, the piston plate 112 on the outside of the piston plate 112 slides inside the arc-shaped groove 1233 and the arc-shaped groove 1211, which drives the rubber scraper roller 1121 on the outside of the piston plate 112 to remove impurities and prevent clogging on the inner wall of the upper filter barrel 123.

[0025] Reference Figure 1-2 , Figure 7-8 As shown in this embodiment: the flow shell 122 is fixedly connected to the spray pipe 2 by bolts 21. The spray pipe 2 is divided into a liquid delivery pipe 22, a bend 23, and an output pipe 24. Two sets of limiting plates 231 are installed inside the bend 23. A fixed shaft 233 is rotatably installed between the two sets of limiting plates 231. Torsion springs are installed at both ends of the fixed shaft 233. One end of the torsion spring is fixedly connected to the inner wall of the bend 23. Two sets of limiting blocks 232 are installed on the inner wall of the bend 23. The limiting blocks 232 are located on the side of the limiting plates 231 closest to the limiting plates 231. When the piston plate 112 delivers sewage to the spray pipe 2, the sewage, under pressure, passes through... Through the liquid delivery pipe 22, the bend 23, and the output pipe 24, the sewage flows into the output pipe 24 after passing through the bend 23 and breaking through the two sets of limiting plates 231. The limiting plates 231 prevent the sewage from flowing back under the restriction of the limiting block 232. Since the piston plate 112 is equipped with two sets of one-way valves 1123, when the piston plate 112 moves downward, the piston plate 112 first discharges the sewage inside the filter tank 123 into the upper end of the piston plate 112. At the same time, through the limiting plate 231 inside the bend 23, the liquid inside the spray pipe 2 will not flow back due to the pressure of the piston plate 112 moving downward, thus affecting the spraying effect.

[0026] Reference Figure 7-9 As shown in this embodiment: a Venturi tube 241 is fixedly installed on the inner wall of the output pipe 24, and the Venturi tube 241 and the inner wall of the output pipe 24 form a liquid storage cavity 242. An infusion tube 25 is installed through the upper end of the output pipe 24, and the infusion tube 25 is connected to the liquid storage cavity 242. The infusion tube 25 is connected to the drug storage tank, and the drug is slowly injected into the infusion tube 25 through the output pump.

[0027] Reference Figure 7-10 As shown in this embodiment: the throat of the Venturi tube 241 has multiple sets of circular holes 2412, and the diffuser section of the Venturi tube 241 is provided with three sets of spiral guide vanes 2411. When the sewage passes through the outlet pipe 24, due to the high flow rate of the sewage, the sewage flows from the constriction section of the Venturi tube 241 to the throat section for acceleration, thereby attracting the liquid inside the storage chamber 242 to mix with the sewage through the circular holes 2412 and then discharge through the diffuser section of the Venturi tube 241. During discharge, due to the spiral guide vanes 2411 provided inside the diffuser section, the mixed liquid is transformed from axial flow to swirling flow, which enhances the turbulent mixing of the agent and the sewage.

[0028] Working principle: When this device is working, the hydraulic cylinder 11 drives the connecting column 111 to move the piston plate 112 up and down in the filter assembly 12. When moving downward, the sewage is discharged step by step through the drain hole 1232 and drain hole 1231 of the filter barrel 123. The high-speed water flow disperses the surrounding impurities and clears the drain hole blockage. When moving upward, the filtered sewage is pushed to the spray pipe 2 through the flow shell 122. The movement of the piston plate 112 causes the water pressure to change dynamically, so that the spray pipe 2 sprays a water column with a "far-near-far" wave-shaped trajectory, which expands the coverage area of ​​the agent and avoids accumulation. At the same time, when the sewage flows through the venturi tube 241 in the output pipe 24, it is accelerated to form a negative pressure in the throat section. The agent is drawn into the liquid storage chamber 242 through the round hole 2412. Then, the spiral guide vane 2411 of the diffuser section transforms the mixed liquid from axial flow to swirling flow, which enhances turbulent mixing and finally achieves efficient mixing and uniform spraying of sewage and agent.

[0029] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A small, portable, high-efficiency pesticide mixing and spraying device, characterized in that, The system includes a suction assembly, the output end of which is equipped with a spray pipe. The spray pipe is connected to the railing of the sewage tank via a connecting rod. The suction assembly includes a hydraulic cylinder. A filter assembly is fixedly installed at the lower end of the hydraulic cylinder. A connecting column is fixedly installed at the drive end of the hydraulic cylinder. The lower end of the connecting column passes through the filter assembly. A piston plate is rotatably installed at the lower end of the connecting column. The filter assembly includes a connecting shell, the piston plate is slidably connected to the connecting shell, and a filter barrel is fixedly installed at the lower end of the connecting shell. The filter barrel is divided into two layers. The upper layer of the filter barrel has a drainage hole one, and the lower layer of the filter barrel has a drainage hole two. The diameter of the drainage hole two is twice the diameter of the drainage hole one.

2. The small, portable, high-efficiency mixing and spraying device for pharmaceuticals according to claim 1, characterized in that: A flow shell is installed through the outer side of the connecting shell, and the flow shell is fixedly connected to the spray pipe.

3. The small, portable, high-efficiency mixing and spraying device for pharmaceuticals according to claim 1, characterized in that: A rubber scraper roller is fixedly installed on the outer side of the piston plate, and a limiting ball is fixedly installed on the outer side of the piston plate. The limiting ball matches the connecting shell and the upper filter barrel.

4. The small, portable, high-efficiency mixing and spraying device for pharmaceuticals according to claim 3, characterized in that: The piston plate is equipped with two sets of one-way valves.

5. The small, portable, high-efficiency mixing and spraying device for pharmaceuticals according to claim 2, characterized in that: The inner wall of the connecting shell is provided with an arc-shaped groove one, and the inner wall of the upper filter barrel is provided with an arc-shaped groove two. The arc-shaped groove two is connected to the arc-shaped groove one, and the limiting ball is matched with the arc-shaped groove two and the arc-shaped groove one.

6. The small, portable, high-efficiency mixing and spraying device for pharmaceuticals according to claim 2, characterized in that: The flow shell is fixedly connected to the spray pipe by bolts. The spray pipe is divided into a liquid delivery pipe, a bend pipe, and an output pipe.

7. The small, portable, high-efficiency mixing and spraying device for pharmaceuticals according to claim 6, characterized in that: The inside of the bend is provided with two sets of limiting plates, and a fixed shaft is rotatably installed between the two sets of limiting plates. Torsion springs are provided at both ends of the fixed shaft, and one end of the torsion spring is fixedly connected to the inner wall of the bend. The inner wall of the bend is provided with two sets of limiting blocks, and the limiting blocks are located on the side of the limiting plate closer to the limiting plate.

8. The small, portable, high-efficiency mixing and spraying device for pharmaceuticals according to claim 7, characterized in that: A venturi tube is fixedly installed on the inner wall of the output pipe, and the venturi tube and the inner wall of the output pipe form a liquid storage cavity. An infusion tube is installed through the upper end of the output pipe, and the infusion tube is connected to the liquid storage cavity. The infusion tube is connected to the medicine storage tank, and the medicine is slowly introduced into the infusion tube through the output pump.

9. The small, portable, high-efficiency mixing and spraying device for pharmaceuticals according to claim 8, characterized in that: The throat of the venturi tube has multiple sets of round holes.

10. The small, portable, high-efficiency mixing and spraying device for pharmaceuticals according to claim 9, characterized in that: The diffuser section of the venturi tube is equipped with three sets of helical guide vanes.

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